Deuteronomy 3:8

8 At that time we took from the two kings of the Amorites the land across the Jordan, from the Arnon Valley as far as Mount Hermon—

Deuteronomy 3:8 Meaning and Commentary

Deuteronomy 3:8

And we took at that time out of the hands of the two kings of
the Amorites
Sihon king of Heshbon, and Og king of Bashan;

the land that [was] on this side Jordan;
where Moses then was, being in the plains of Moab, and was the country beyond Jordan, with respect to the land of Canaan, and when in that:

from the river of Arnon unto Mount Hermon;
Arnon was a river which divided Moab and the Amorites, ( Numbers 22:13 ) and Hermon was a mountain of Gilead, which ended where Lebanon began, and was the northerly border of this country. It was remarkable for the dew that fell on it; (See Gill on Psalms 133:3).

Deuteronomy 3:8 In-Context

6 We devoted them to destruction, as we had done to Sihon king of Heshbon, utterly destroying the men, women, and children of every city.

7 But all the livestock and plunder of the cities we carried off for ourselves.

8 At that time we took from the two kings of the Amorites the land across the Jordan, from the Arnon Valley as far as Mount Hermon—

9 which the Sidonians call Sirion but the Amorites call Senir—

10 all the cities of the plateau, all of Gilead, and all of Bashan as far as the cities of Salecah and Edrei in the kingdom of Og.